Intel 10 GB NICs, distributed switches and ESX 4

If your ESX hosts are still at ESX 4.0 Update 2 and you have Intel 10 GB NICs, you are no doubt aware that update 2 caused you some problems if you are using a distributed switch for your Intel adapters.

I was fortunate to have discovered this in my lab first. When I tested this, I found that I lost  my network connections upon rebooting after applying Update 2.

ESX 4.0 Update 3 and ESX 4.1 Update 1 both fix this problem.